引用本文: 曾安敏, 秦显平, 刘光明, 唐颖哲. 中国大陆水平运动速度场的多面函数模型[J]. 武汉大学学报 ( 信息科学版), 2013, 38(4): 394-398.
ZENG Anmin, QIN Xianping, LIU Guangming, TANG Yingzhe. Hardy Multi-quadric Fitting Model of Chinese Mainland Horizontal Crustal Movement[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 394-398.
 Citation: ZENG Anmin, QIN Xianping, LIU Guangming, TANG Yingzhe. Hardy Multi-quadric Fitting Model of Chinese Mainland Horizontal Crustal Movement[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 394-398.

## Hardy Multi-quadric Fitting Model of Chinese Mainland Horizontal Crustal Movement

• 摘要: 根据1998~2009年的GPS基准站和重复观测资料，获得了1 041个点在2000中国大地坐标系下的速度，研究了利用多面函数建立速度场模型的关键问题：核函数的选择、平滑因子的确定以及结点的确定，并利用多面函数建立了覆盖中国大陆范围的分布均匀、有实用价值的中国地壳水平运动整体速度场。

Abstract: By processing GPS data of the fiducial stations and repeatedly observed stations from 1998 to 2009, the corresponding velocities of a set of 1 041 reference frame stations (RS) are obtained, constrained to the current frame of 2000 Chinese Geodetic Coordinate System (CGCS2000). To establish the velocity field of horizontal crustal movement of Chinese mainland by using hardy multi-quadric fitting model and the velocities of 1 041 RS, we discuss the key problems of the hardy function interpolation: the influences of kernel function, nodes and smoothing factor. And we establish a largely covered and valuable speed field model of horizontal crustal movement of Chinese mainland using hardy function interpolation. This established speed field result would be widely used for maintaining 2000 Chinese Terrestrial Reference Frame (CTRF2000) and researching the crustal movement of Chinese mainland.

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